Home / 878,519.20-1,317,778.80-406,127.20

Finding the Fourth Proportional to 878,519.20, 1,317,778.80 and 406,127.20

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Solution

The fourth proportional to 878,519.20, 1,317,778.80 and 406,127.20 is: 609,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,519.20 : 1,317,778.80 = 406,127.20 : x
  2. Step 2: Convert to fraction form
    878,519.20/1,317,778.80 = 406,127.20/x
  3. Step 3: Cross multiply
    878,519.20x = 1,317,778.80 × 406,127.20
  4. Step 4: Simplify right side
    878,519.20x = 535,185,814,263.36
  5. Step 5: Solve for x
    x = 535,185,814,263.36/878,519.20
  6. Step 6: Final answer
    x = 609,190.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.